Re: [Elecraft] K3 Switched 12 Volts

[K1GQ]

On 2015-05-23, at 19:20, Hank Garretson  wrote:
> 
> For the last month or so, the switched 12VDC OUT phono jack on the back of my 
> K3 isn't switched. My P3 is plugged into this jack. As soon as I turn the 
> 12-volt power supply on, the P3 powers up even though the K3 is not on. When 
> I hit POWER on the K3 to power down the K3, the P3 stays on. To power down 
> the P3, I have to turn the 12-volt power supply off.
> 
> It used to work as advertized--switched. Ideas?

Lower right corner of K3 RF Board schematic, Sht. 3 of 4.

J10 = 12V In, J11 = 12V Out.
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Re: [Elecraft] K3 Switched 12 Volts

[Joe Subich, W4TV]

Based on the K3 schematics (page 5), I would check Q2 FDS6375.

73,

   ... Joe, W4TV


On 2015-05-23 7:20 PM, Hank Garretson wrote:

For the last month or so, the switched 12VDC OUT phono jack on the back of
my K3 isn't switched. My P3 is plugged into this jack. As soon as I turn
the 12-volt power supply on, the P3 powers up even though the K3 is not on.
When I hit POWER on the K3 to power down the K3, the P3 stays on. To power
down the P3, I have to turn the 12-volt power supply off.

It used to work as advertized--switched. Ideas?

73,

Hank, W6SX
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